So having fixed my first and most major issue. I am on to my next one. My truck starts up and idles great. However after driving when I put the truck in neutral to stop my RPMs will pin at 1500 to 2000. If I rev the engine past 3k to 4k it will come back down. Any help with anyone who has come across this issue in the past is much appreciated. Thank you.

 

Anyone?

 

Have you tried turning your throttle screw down when the engine is doing this?

 

I have not. My thought process was that if the idle is perfect on start up that wasn't the problem. Am I incorrect? As I said it seems to be happening as the engine gets up to temperature.

 

Throttle valve sticking?

 

How can I go about finding/addressing that?

 

So I adjusted the idle screw inwards and dropped my idle to about 750. Then got in the truck and drove around. Felt good at first but then it bogged down to about 400-500 when I gently came to a stop. When going into neutral while still carrying some speed I would idle around 1k-1500. So I'm thinking it is something else.

 

When u stop and the idle is high, get out and open the hood. See if u can close the throttle valve any more by hand.....

 

If not your idle screw, then you must look else where. I would make sure your IACV (Idle Air Control Valve) is not cloged up and working well.

By the way, what engine are we dealing with?

 

Where is the throttle valve exactly?

 

After doing some searching I am starting to suspect the same thing. It is a 22re. I see what I have found out to be my "dashpot" just hanging to the side of my block. Is that what it is supposed to do?

 

Update. I have retrieved the check engine light that the truck is throwing. The video is found here:

 

I had the same issue a couple months ago. I took apart the intake and just cleaned the hell out of the throttle body with some good ol' Berrymans. Made sure to get all moving parts on the outside of it sprayed down with some penatrating lubricant just to make sure there wasn't any mud/sand stuck in there restricting anything. After that, never another problem.

 

Did you take off your tps before doing so? I'm reading that it can be damaged by the cleaner if not taken off?

 

No I didn't. My TPS is outside of the body. I've got the 3VZ-E engine. If you can, I'd remove it given that the problem is most likely your IAC (Idle Air Control) Valve.

 

*UPDATE* Problem was solved by removing throttle body and deep cleaning it and all passages. As well as replacing the Throttle Position Sensor.

 

Did you replace with new or aftermarket or used?? Just curious having some of the same symptoms figured if it's cheap enough I would try a new one.

 

I replaced with a brand new one for just a little over 100 bucks off of Amazon.

 

And who adjusted the TPS????????

 

Well I did of course. The FSM has all the information needed to adjust it or there is a great write up on 4crawler as well:

http://www.4crawler.com/4x4/CheapTricks/TPS/index.shtml